參數(shù)資料
型號(hào): ICS950402YFT-LF
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 300 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝: 0.300 INCH, MO-118, SSOP-48
文件頁(yè)數(shù): 1/18頁(yè)
文件大?。?/td> 126K
代理商: ICS950402YFT-LF
Integrated
Circuit
Systems, Inc.
ICS950402
0700A—07/31/03
Block Diagram
Functionality
Pin Configuration
Recommended Application:
AMD K8 System Clock with AMD or VIA Chipset
Output Features:
2 - Differential pair push-pull CPU clocks @
3.3V
9 - PCICLK (Including 1 free running) @3.3V
4 - Selectable PCICLK/HTTCLK @3.3V
1 - 48MHz, @3.3V fixed.
1 - 24/48MHz @ 3.3V
3 - REF @3.3V, 14.318MHz.
Features:
Programmable output frequency.
Programmable output divider ratios.
Programmable output rise/fall time.
Programmable output skew.
Programmable spread percentage for EMI
control.
Watchdog timer technology to reset system
if system malfunctions.
Programmable watch dog safe frequency.
Support I
2C Index read/write and block read/
write operations.
Uses external 14.318MHz crystal.
Supports Hyper Transport Technology (HTTCLK).
AMD - K8 System Clock Chip
PLL2
PLL1
Spread
Spectrum
PCICLK (6:0, 11)
CPUCLKT (1:0)
CPUCLKC (1:0)
X1
X2
XTAL
OSC
CPU
DIVDER
PCI
DIVDER
Stop
SDATA
SCLK
FS (3:0)
24_48SEL#
MODE (A,B,C)
PCI_STOP#
Control
Logic
REF (2:0)
48MHz
24_48MHz
/ 2
PCICLK_F
PCICLK/HTTCLK (3:0)
X 2
Config.
Reg.
CPU
HTT
PCI
MHz
0
100.90
67.27
33.63
0
1
133.90
66.95
33.48
0
1
0
168.00
67.20
33.60
0
1
202.00
67.33
33.67
0
1
0
100.20
66.80
33.40
0
1
0
1
133.50
66.75
33.38
0
1
0
166.70
66.68
33.34
0
1
200.40
66.80
33.40
1
0
150.00
60.00
30.00
1
0
1
180.00
60.00
30.00
1
0
1
0
210.00
70.00
35.00
1
0
1
240.00
60.00
30.00
1
0
270.00
67.50
33.75
1
0
1
233.33
66.67
33.33
1
0
266.67
66.67
33.33
1
300.00
75.00
37.50
FS3
FS2
FS1
FS0
*FS0/REF0 1
48 REF1/FS1*
VDDREF 2
47 GND
X1 3
46 VDDREF
X2 4
45 REF2/FS2*
GND 5
44 Reset#
*(PCICLK7/HTTCLK0)ModeA 6
43 VDDA
*PCICLK8/HTTCLK1/ModeB 7
42 GND
PCICLK9/HTTCLK2 8
41 CPUCLK8T0
VDDPCI 9
40 CPUCLK8C0
GND 10
39 GND
PCICLK10/HTTCLK3 11
38 VDDCPU
PCICLK11 12
37 CPUCLK8T1
PCICLK0 13
36 CPUCLK8C1
PCICLK1 14
35 VDDCPU
GND 15
34 GND
VDDPCI 16
33 GND
****PCICLK2 17
32 VDD
****PCICLK3 18
31 48MHz/FS3**
VDDPCI 19
30 GND
GND 20
29 AVDD48
PCICLK4 21
28 24_48MHz/Sel24_48#*~
PCICLK522
27GND
~*PCICLK_F/ModeC 23
26 SDATA
~*(PCICLK6)PCI_STOP# 24
25 SCLK
48-SSOP
* Internal Pull-Up Resistor
** Internal Pull-Down Resistor
~ This Output has 2X Drive Strength
**** This Output has 2.3X Drive Strength
IC
S950402
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